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__clang_cuda_intrinsics.h
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1 /*===--- __clang_cuda_intrinsics.h - Device-side CUDA intrinsic wrappers ---===
2  *
3  * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4  * See https://llvm.org/LICENSE.txt for license information.
5  * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6  *
7  *===-----------------------------------------------------------------------===
8  */
9 #ifndef __CLANG_CUDA_INTRINSICS_H__
10 #define __CLANG_CUDA_INTRINSICS_H__
11 #ifndef __CUDA__
12 #error "This file is for CUDA compilation only."
13 #endif
14 
15 // sm_30 intrinsics: __shfl_{up,down,xor}.
16 
17 #define __SM_30_INTRINSICS_H__
18 #define __SM_30_INTRINSICS_HPP__
19 
20 #if !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 300
21 
22 #pragma push_macro("__MAKE_SHUFFLES")
23 #define __MAKE_SHUFFLES(__FnName, __IntIntrinsic, __FloatIntrinsic, __Mask, \
24  __Type) \
25  inline __device__ int __FnName(int __val, __Type __offset, \
26  int __width = warpSize) { \
27  return __IntIntrinsic(__val, __offset, \
28  ((warpSize - __width) << 8) | (__Mask)); \
29  } \
30  inline __device__ float __FnName(float __val, __Type __offset, \
31  int __width = warpSize) { \
32  return __FloatIntrinsic(__val, __offset, \
33  ((warpSize - __width) << 8) | (__Mask)); \
34  } \
35  inline __device__ unsigned int __FnName(unsigned int __val, __Type __offset, \
36  int __width = warpSize) { \
37  return static_cast<unsigned int>( \
38  ::__FnName(static_cast<int>(__val), __offset, __width)); \
39  } \
40  inline __device__ long long __FnName(long long __val, __Type __offset, \
41  int __width = warpSize) { \
42  struct __Bits { \
43  int __a, __b; \
44  }; \
45  _Static_assert(sizeof(__val) == sizeof(__Bits)); \
46  _Static_assert(sizeof(__Bits) == 2 * sizeof(int)); \
47  __Bits __tmp; \
48  memcpy(&__tmp, &__val, sizeof(__val)); \
49  __tmp.__a = ::__FnName(__tmp.__a, __offset, __width); \
50  __tmp.__b = ::__FnName(__tmp.__b, __offset, __width); \
51  long long __ret; \
52  memcpy(&__ret, &__tmp, sizeof(__tmp)); \
53  return __ret; \
54  } \
55  inline __device__ long __FnName(long __val, __Type __offset, \
56  int __width = warpSize) { \
57  _Static_assert(sizeof(long) == sizeof(long long) || \
58  sizeof(long) == sizeof(int)); \
59  if (sizeof(long) == sizeof(long long)) { \
60  return static_cast<long>( \
61  ::__FnName(static_cast<long long>(__val), __offset, __width)); \
62  } else if (sizeof(long) == sizeof(int)) { \
63  return static_cast<long>( \
64  ::__FnName(static_cast<int>(__val), __offset, __width)); \
65  } \
66  } \
67  inline __device__ unsigned long __FnName( \
68  unsigned long __val, __Type __offset, int __width = warpSize) { \
69  return static_cast<unsigned long>( \
70  ::__FnName(static_cast<long>(__val), __offset, __width)); \
71  } \
72  inline __device__ unsigned long long __FnName( \
73  unsigned long long __val, __Type __offset, int __width = warpSize) { \
74  return static_cast<unsigned long long>(::__FnName( \
75  static_cast<unsigned long long>(__val), __offset, __width)); \
76  } \
77  inline __device__ double __FnName(double __val, __Type __offset, \
78  int __width = warpSize) { \
79  long long __tmp; \
80  _Static_assert(sizeof(__tmp) == sizeof(__val)); \
81  memcpy(&__tmp, &__val, sizeof(__val)); \
82  __tmp = ::__FnName(__tmp, __offset, __width); \
83  double __ret; \
84  memcpy(&__ret, &__tmp, sizeof(__ret)); \
85  return __ret; \
86  }
87 
88 __MAKE_SHUFFLES(__shfl, __nvvm_shfl_idx_i32, __nvvm_shfl_idx_f32, 0x1f, int);
89 // We use 0 rather than 31 as our mask, because shfl.up applies to lanes >=
90 // maxLane.
91 __MAKE_SHUFFLES(__shfl_up, __nvvm_shfl_up_i32, __nvvm_shfl_up_f32, 0,
92  unsigned int);
93 __MAKE_SHUFFLES(__shfl_down, __nvvm_shfl_down_i32, __nvvm_shfl_down_f32, 0x1f,
94  unsigned int);
95 __MAKE_SHUFFLES(__shfl_xor, __nvvm_shfl_bfly_i32, __nvvm_shfl_bfly_f32, 0x1f,
96  int);
97 #pragma pop_macro("__MAKE_SHUFFLES")
98 
99 #endif // !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 300
100 
101 #if CUDA_VERSION >= 9000
102 #if (!defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 300)
103 // __shfl_sync_* variants available in CUDA-9
104 #pragma push_macro("__MAKE_SYNC_SHUFFLES")
105 #define __MAKE_SYNC_SHUFFLES(__FnName, __IntIntrinsic, __FloatIntrinsic, \
106  __Mask, __Type) \
107  inline __device__ int __FnName(unsigned int __mask, int __val, \
108  __Type __offset, int __width = warpSize) { \
109  return __IntIntrinsic(__mask, __val, __offset, \
110  ((warpSize - __width) << 8) | (__Mask)); \
111  } \
112  inline __device__ float __FnName(unsigned int __mask, float __val, \
113  __Type __offset, int __width = warpSize) { \
114  return __FloatIntrinsic(__mask, __val, __offset, \
115  ((warpSize - __width) << 8) | (__Mask)); \
116  } \
117  inline __device__ unsigned int __FnName(unsigned int __mask, \
118  unsigned int __val, __Type __offset, \
119  int __width = warpSize) { \
120  return static_cast<unsigned int>( \
121  ::__FnName(__mask, static_cast<int>(__val), __offset, __width)); \
122  } \
123  inline __device__ long long __FnName(unsigned int __mask, long long __val, \
124  __Type __offset, \
125  int __width = warpSize) { \
126  struct __Bits { \
127  int __a, __b; \
128  }; \
129  _Static_assert(sizeof(__val) == sizeof(__Bits)); \
130  _Static_assert(sizeof(__Bits) == 2 * sizeof(int)); \
131  __Bits __tmp; \
132  memcpy(&__tmp, &__val, sizeof(__val)); \
133  __tmp.__a = ::__FnName(__mask, __tmp.__a, __offset, __width); \
134  __tmp.__b = ::__FnName(__mask, __tmp.__b, __offset, __width); \
135  long long __ret; \
136  memcpy(&__ret, &__tmp, sizeof(__tmp)); \
137  return __ret; \
138  } \
139  inline __device__ unsigned long long __FnName( \
140  unsigned int __mask, unsigned long long __val, __Type __offset, \
141  int __width = warpSize) { \
142  return static_cast<unsigned long long>(::__FnName( \
143  __mask, static_cast<unsigned long long>(__val), __offset, __width)); \
144  } \
145  inline __device__ long __FnName(unsigned int __mask, long __val, \
146  __Type __offset, int __width = warpSize) { \
147  _Static_assert(sizeof(long) == sizeof(long long) || \
148  sizeof(long) == sizeof(int)); \
149  if (sizeof(long) == sizeof(long long)) { \
150  return static_cast<long>(::__FnName( \
151  __mask, static_cast<long long>(__val), __offset, __width)); \
152  } else if (sizeof(long) == sizeof(int)) { \
153  return static_cast<long>( \
154  ::__FnName(__mask, static_cast<int>(__val), __offset, __width)); \
155  } \
156  } \
157  inline __device__ unsigned long __FnName( \
158  unsigned int __mask, unsigned long __val, __Type __offset, \
159  int __width = warpSize) { \
160  return static_cast<unsigned long>( \
161  ::__FnName(__mask, static_cast<long>(__val), __offset, __width)); \
162  } \
163  inline __device__ double __FnName(unsigned int __mask, double __val, \
164  __Type __offset, int __width = warpSize) { \
165  long long __tmp; \
166  _Static_assert(sizeof(__tmp) == sizeof(__val)); \
167  memcpy(&__tmp, &__val, sizeof(__val)); \
168  __tmp = ::__FnName(__mask, __tmp, __offset, __width); \
169  double __ret; \
170  memcpy(&__ret, &__tmp, sizeof(__ret)); \
171  return __ret; \
172  }
173 __MAKE_SYNC_SHUFFLES(__shfl_sync, __nvvm_shfl_sync_idx_i32,
174  __nvvm_shfl_sync_idx_f32, 0x1f, int);
175 // We use 0 rather than 31 as our mask, because shfl.up applies to lanes >=
176 // maxLane.
177 __MAKE_SYNC_SHUFFLES(__shfl_up_sync, __nvvm_shfl_sync_up_i32,
178  __nvvm_shfl_sync_up_f32, 0, unsigned int);
179 __MAKE_SYNC_SHUFFLES(__shfl_down_sync, __nvvm_shfl_sync_down_i32,
180  __nvvm_shfl_sync_down_f32, 0x1f, unsigned int);
181 __MAKE_SYNC_SHUFFLES(__shfl_xor_sync, __nvvm_shfl_sync_bfly_i32,
182  __nvvm_shfl_sync_bfly_f32, 0x1f, int);
183 #pragma pop_macro("__MAKE_SYNC_SHUFFLES")
184 
185 inline __device__ void __syncwarp(unsigned int mask = 0xffffffff) {
186  return __nvvm_bar_warp_sync(mask);
187 }
188 
189 inline __device__ void __barrier_sync(unsigned int id) {
190  __nvvm_barrier_sync(id);
191 }
192 
193 inline __device__ void __barrier_sync_count(unsigned int id,
194  unsigned int count) {
195  __nvvm_barrier_sync_cnt(id, count);
196 }
197 
198 inline __device__ int __all_sync(unsigned int mask, int pred) {
199  return __nvvm_vote_all_sync(mask, pred);
200 }
201 
202 inline __device__ int __any_sync(unsigned int mask, int pred) {
203  return __nvvm_vote_any_sync(mask, pred);
204 }
205 
206 inline __device__ int __uni_sync(unsigned int mask, int pred) {
207  return __nvvm_vote_uni_sync(mask, pred);
208 }
209 
210 inline __device__ unsigned int __ballot_sync(unsigned int mask, int pred) {
211  return __nvvm_vote_ballot_sync(mask, pred);
212 }
213 
214 inline __device__ unsigned int __activemask() {
215 #if CUDA_VERSION < 9020
216  return __nvvm_vote_ballot(1);
217 #else
218  unsigned int mask;
219  asm volatile("activemask.b32 %0;" : "=r"(mask));
220  return mask;
221 #endif
222 }
223 
224 inline __device__ unsigned int __fns(unsigned mask, unsigned base, int offset) {
225  return __nvvm_fns(mask, base, offset);
226 }
227 
228 #endif // !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 300
229 
230 // Define __match* builtins CUDA-9 headers expect to see.
231 #if !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 700
232 inline __device__ unsigned int __match32_any_sync(unsigned int mask,
233  unsigned int value) {
234  return __nvvm_match_any_sync_i32(mask, value);
235 }
236 
237 inline __device__ unsigned long long
238 __match64_any_sync(unsigned int mask, unsigned long long value) {
239  return __nvvm_match_any_sync_i64(mask, value);
240 }
241 
242 inline __device__ unsigned int
243 __match32_all_sync(unsigned int mask, unsigned int value, int *pred) {
244  return __nvvm_match_all_sync_i32p(mask, value, pred);
245 }
246 
247 inline __device__ unsigned long long
248 __match64_all_sync(unsigned int mask, unsigned long long value, int *pred) {
249  return __nvvm_match_all_sync_i64p(mask, value, pred);
250 }
251 #include "crt/sm_70_rt.hpp"
252 
253 #endif // !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 700
254 #endif // __CUDA_VERSION >= 9000
255 
256 // sm_32 intrinsics: __ldg and __funnelshift_{l,lc,r,rc}.
257 
258 // Prevent the vanilla sm_32 intrinsics header from being included.
259 #define __SM_32_INTRINSICS_H__
260 #define __SM_32_INTRINSICS_HPP__
261 
262 #if !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 320
263 
264 inline __device__ char __ldg(const char *ptr) { return __nvvm_ldg_c(ptr); }
265 inline __device__ short __ldg(const short *ptr) { return __nvvm_ldg_s(ptr); }
266 inline __device__ int __ldg(const int *ptr) { return __nvvm_ldg_i(ptr); }
267 inline __device__ long __ldg(const long *ptr) { return __nvvm_ldg_l(ptr); }
268 inline __device__ long long __ldg(const long long *ptr) {
269  return __nvvm_ldg_ll(ptr);
270 }
271 inline __device__ unsigned char __ldg(const unsigned char *ptr) {
272  return __nvvm_ldg_uc(ptr);
273 }
274 inline __device__ signed char __ldg(const signed char *ptr) {
275  return __nvvm_ldg_uc((const unsigned char *)ptr);
276 }
277 inline __device__ unsigned short __ldg(const unsigned short *ptr) {
278  return __nvvm_ldg_us(ptr);
279 }
280 inline __device__ unsigned int __ldg(const unsigned int *ptr) {
281  return __nvvm_ldg_ui(ptr);
282 }
283 inline __device__ unsigned long __ldg(const unsigned long *ptr) {
284  return __nvvm_ldg_ul(ptr);
285 }
286 inline __device__ unsigned long long __ldg(const unsigned long long *ptr) {
287  return __nvvm_ldg_ull(ptr);
288 }
289 inline __device__ float __ldg(const float *ptr) { return __nvvm_ldg_f(ptr); }
290 inline __device__ double __ldg(const double *ptr) { return __nvvm_ldg_d(ptr); }
291 
292 inline __device__ char2 __ldg(const char2 *ptr) {
293  typedef char c2 __attribute__((ext_vector_type(2)));
294  // We can assume that ptr is aligned at least to char2's alignment, but the
295  // load will assume that ptr is aligned to char2's alignment. This is only
296  // safe if alignof(c2) <= alignof(char2).
297  c2 rv = __nvvm_ldg_c2(reinterpret_cast<const c2 *>(ptr));
298  char2 ret;
299  ret.x = rv[0];
300  ret.y = rv[1];
301  return ret;
302 }
303 inline __device__ char4 __ldg(const char4 *ptr) {
304  typedef char c4 __attribute__((ext_vector_type(4)));
305  c4 rv = __nvvm_ldg_c4(reinterpret_cast<const c4 *>(ptr));
306  char4 ret;
307  ret.x = rv[0];
308  ret.y = rv[1];
309  ret.z = rv[2];
310  ret.w = rv[3];
311  return ret;
312 }
313 inline __device__ short2 __ldg(const short2 *ptr) {
314  typedef short s2 __attribute__((ext_vector_type(2)));
315  s2 rv = __nvvm_ldg_s2(reinterpret_cast<const s2 *>(ptr));
316  short2 ret;
317  ret.x = rv[0];
318  ret.y = rv[1];
319  return ret;
320 }
321 inline __device__ short4 __ldg(const short4 *ptr) {
322  typedef short s4 __attribute__((ext_vector_type(4)));
323  s4 rv = __nvvm_ldg_s4(reinterpret_cast<const s4 *>(ptr));
324  short4 ret;
325  ret.x = rv[0];
326  ret.y = rv[1];
327  ret.z = rv[2];
328  ret.w = rv[3];
329  return ret;
330 }
331 inline __device__ int2 __ldg(const int2 *ptr) {
332  typedef int i2 __attribute__((ext_vector_type(2)));
333  i2 rv = __nvvm_ldg_i2(reinterpret_cast<const i2 *>(ptr));
334  int2 ret;
335  ret.x = rv[0];
336  ret.y = rv[1];
337  return ret;
338 }
339 inline __device__ int4 __ldg(const int4 *ptr) {
340  typedef int i4 __attribute__((ext_vector_type(4)));
341  i4 rv = __nvvm_ldg_i4(reinterpret_cast<const i4 *>(ptr));
342  int4 ret;
343  ret.x = rv[0];
344  ret.y = rv[1];
345  ret.z = rv[2];
346  ret.w = rv[3];
347  return ret;
348 }
349 inline __device__ longlong2 __ldg(const longlong2 *ptr) {
350  typedef long long ll2 __attribute__((ext_vector_type(2)));
351  ll2 rv = __nvvm_ldg_ll2(reinterpret_cast<const ll2 *>(ptr));
352  longlong2 ret;
353  ret.x = rv[0];
354  ret.y = rv[1];
355  return ret;
356 }
357 
358 inline __device__ uchar2 __ldg(const uchar2 *ptr) {
359  typedef unsigned char uc2 __attribute__((ext_vector_type(2)));
360  uc2 rv = __nvvm_ldg_uc2(reinterpret_cast<const uc2 *>(ptr));
361  uchar2 ret;
362  ret.x = rv[0];
363  ret.y = rv[1];
364  return ret;
365 }
366 inline __device__ uchar4 __ldg(const uchar4 *ptr) {
367  typedef unsigned char uc4 __attribute__((ext_vector_type(4)));
368  uc4 rv = __nvvm_ldg_uc4(reinterpret_cast<const uc4 *>(ptr));
369  uchar4 ret;
370  ret.x = rv[0];
371  ret.y = rv[1];
372  ret.z = rv[2];
373  ret.w = rv[3];
374  return ret;
375 }
376 inline __device__ ushort2 __ldg(const ushort2 *ptr) {
377  typedef unsigned short us2 __attribute__((ext_vector_type(2)));
378  us2 rv = __nvvm_ldg_us2(reinterpret_cast<const us2 *>(ptr));
379  ushort2 ret;
380  ret.x = rv[0];
381  ret.y = rv[1];
382  return ret;
383 }
384 inline __device__ ushort4 __ldg(const ushort4 *ptr) {
385  typedef unsigned short us4 __attribute__((ext_vector_type(4)));
386  us4 rv = __nvvm_ldg_us4(reinterpret_cast<const us4 *>(ptr));
387  ushort4 ret;
388  ret.x = rv[0];
389  ret.y = rv[1];
390  ret.z = rv[2];
391  ret.w = rv[3];
392  return ret;
393 }
394 inline __device__ uint2 __ldg(const uint2 *ptr) {
395  typedef unsigned int ui2 __attribute__((ext_vector_type(2)));
396  ui2 rv = __nvvm_ldg_ui2(reinterpret_cast<const ui2 *>(ptr));
397  uint2 ret;
398  ret.x = rv[0];
399  ret.y = rv[1];
400  return ret;
401 }
402 inline __device__ uint4 __ldg(const uint4 *ptr) {
403  typedef unsigned int ui4 __attribute__((ext_vector_type(4)));
404  ui4 rv = __nvvm_ldg_ui4(reinterpret_cast<const ui4 *>(ptr));
405  uint4 ret;
406  ret.x = rv[0];
407  ret.y = rv[1];
408  ret.z = rv[2];
409  ret.w = rv[3];
410  return ret;
411 }
412 inline __device__ ulonglong2 __ldg(const ulonglong2 *ptr) {
413  typedef unsigned long long ull2 __attribute__((ext_vector_type(2)));
414  ull2 rv = __nvvm_ldg_ull2(reinterpret_cast<const ull2 *>(ptr));
415  ulonglong2 ret;
416  ret.x = rv[0];
417  ret.y = rv[1];
418  return ret;
419 }
420 
421 inline __device__ float2 __ldg(const float2 *ptr) {
422  typedef float f2 __attribute__((ext_vector_type(2)));
423  f2 rv = __nvvm_ldg_f2(reinterpret_cast<const f2 *>(ptr));
424  float2 ret;
425  ret.x = rv[0];
426  ret.y = rv[1];
427  return ret;
428 }
429 inline __device__ float4 __ldg(const float4 *ptr) {
430  typedef float f4 __attribute__((ext_vector_type(4)));
431  f4 rv = __nvvm_ldg_f4(reinterpret_cast<const f4 *>(ptr));
432  float4 ret;
433  ret.x = rv[0];
434  ret.y = rv[1];
435  ret.z = rv[2];
436  ret.w = rv[3];
437  return ret;
438 }
439 inline __device__ double2 __ldg(const double2 *ptr) {
440  typedef double d2 __attribute__((ext_vector_type(2)));
441  d2 rv = __nvvm_ldg_d2(reinterpret_cast<const d2 *>(ptr));
442  double2 ret;
443  ret.x = rv[0];
444  ret.y = rv[1];
445  return ret;
446 }
447 
448 // TODO: Implement these as intrinsics, so the backend can work its magic on
449 // these. Alternatively, we could implement these as plain C and try to get
450 // llvm to recognize the relevant patterns.
451 inline __device__ unsigned __funnelshift_l(unsigned low32, unsigned high32,
452  unsigned shiftWidth) {
453  unsigned result;
454  asm("shf.l.wrap.b32 %0, %1, %2, %3;"
455  : "=r"(result)
456  : "r"(low32), "r"(high32), "r"(shiftWidth));
457  return result;
458 }
459 inline __device__ unsigned __funnelshift_lc(unsigned low32, unsigned high32,
460  unsigned shiftWidth) {
461  unsigned result;
462  asm("shf.l.clamp.b32 %0, %1, %2, %3;"
463  : "=r"(result)
464  : "r"(low32), "r"(high32), "r"(shiftWidth));
465  return result;
466 }
467 inline __device__ unsigned __funnelshift_r(unsigned low32, unsigned high32,
468  unsigned shiftWidth) {
469  unsigned result;
470  asm("shf.r.wrap.b32 %0, %1, %2, %3;"
471  : "=r"(result)
472  : "r"(low32), "r"(high32), "r"(shiftWidth));
473  return result;
474 }
475 inline __device__ unsigned __funnelshift_rc(unsigned low32, unsigned high32,
476  unsigned shiftWidth) {
477  unsigned ret;
478  asm("shf.r.clamp.b32 %0, %1, %2, %3;"
479  : "=r"(ret)
480  : "r"(low32), "r"(high32), "r"(shiftWidth));
481  return ret;
482 }
483 
484 #endif // !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 320
485 
486 #endif // defined(__CLANG_CUDA_INTRINSICS_H__)
__funnelshift_lc
__device__ unsigned __funnelshift_lc(unsigned low32, unsigned high32, unsigned shiftWidth)
Definition: __clang_cuda_intrinsics.h:459
__funnelshift_rc
__device__ unsigned __funnelshift_rc(unsigned low32, unsigned high32, unsigned shiftWidth)
Definition: __clang_cuda_intrinsics.h:475
__MAKE_SHUFFLES
#define __MAKE_SHUFFLES(__FnName, __IntIntrinsic, __FloatIntrinsic, __Mask, __Type)
Definition: __clang_cuda_intrinsics.h:23
__funnelshift_r
__device__ unsigned __funnelshift_r(unsigned low32, unsigned high32, unsigned shiftWidth)
Definition: __clang_cuda_intrinsics.h:467
__ldg
__device__ char __ldg(const char *ptr)
Definition: __clang_cuda_intrinsics.h:264
__funnelshift_l
__device__ unsigned __funnelshift_l(unsigned low32, unsigned high32, unsigned shiftWidth)
Definition: __clang_cuda_intrinsics.h:451
__attribute__
_Float16 __2f16 __attribute__((ext_vector_type(2)))
Zeroes the upper 128 bits (bits 255:128) of all YMM registers.
Definition: __clang_hip_libdevice_declares.h:294
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